Bumping gaia.json for 4 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/bca34690fcf1
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #11684 from huchengtw-moz/camera/Bug_899864_repetitive_touches_on_video_recording_hangs_all

Bug 899864 - [Camera] Repetitive touches on video recording hangs video ...r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/eebfb3ab91f9
Author: John Hu <johu@mozilla.com>
Desc: Bug 899864 - [Camera] Repetitive touches on video recording hangs video player, Gallery, camera recording

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https://hg.mozilla.org/integration/gaia-central/rev/8b7052c0315d
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #11681 from huchengtw-moz/video/Bug_908035_insufficient_error_handling

Bug 908035 - The error handling of video app is insufficient, r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/2719b2b15307
Author: John Hu <johu@mozilla.com>
Desc: Bug 908035 - The error handling of video app is insufficient